Title :
The influence of climatic conditions on the diagnostic results of return voltage measurements
Author :
Patsch, Rainer ; Kouzmine, Oleg
Author_Institution :
Inst. of Mater. & Diagnostics in Electr. Eng., Siegen Univ., Germany
Abstract :
The return voltage method is easy to use and widely accepted method to monitor the condition of paper-oil insulated cables or transformers. The data acquisition is not very sensitive to external disturbances, but the results of the measurements may be influenced by the climatic conditions. Hence for the comparison of results of measurements performed in different seasons-e.g. in winter or in summer-this influence has to be taken into account. The paper presents experimental results from the field and discusses them in detail on the basis of the underlying physical mechanism. Based on this concept a new parameter is introduced, that allows the better characterisation of the ageing status of paper-oil-insulations.
Keywords :
ageing; data acquisition; electric breakdown; insulating oils; insulation testing; paper; power cable insulation; power cable testing; power transformer insulation; power transformer testing; voltage measurement; ageing status characterisation; climatic conditions; data acquisition; insulation breakdown diagnostics; paper-oil insulated cables; paper-oil insulated transformers; physical mechanism; return voltage measurements; Aging; Data acquisition; Dielectrics and electrical insulation; Equivalent circuits; Oil filled cables; Performance evaluation; Polarization; Soil; Temperature; Voltage measurement;
Conference_Titel :
Electrical Insulation, 2002. Conference Record of the 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7337-5
DOI :
10.1109/ELINSL.2002.995910
